diff --git a/CHANGES.md b/CHANGES.md
index 4bf08275cf8..de67943d29f 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,5 +1,11 @@
 # Change Log
 
+## Unreleased
+
+### _Black_
+
+- Correct max string length calculation when there are string operators (#2292)
+
 ## 21.5b2
 
 ### _Black_